1/3 cup strained fresh lemon juice, or more to taste
Fresh lemon slices or wedges for garnish
1 1/2 cups ice cubes, or more as needed
Fresh lavender sprigs for garnish, optional
Bring the water just to a boil in a nonreactive container. Stir in the lavender and sugar until the sugar dissolves. Set aside to steep and cool for 10 to 15 minutes.
When the steeping mixture cools to room temperature, stir in the juice. The mixture can be used immediately, or for a more intense lavender flavor, cover and steep in the refrigerator for up to an hour. Taste it occasionally until desired lavender flavor is obtained, then strain through a fine mesh sieve; press down to force through as much liquid as possible. Use immediately or refrigerate for up to two days.
At serving time fill two 10-12 ounce glasses with ice cubes. Pour the sieved mixture over the ice cubes, dividing between the two glasses. Stir until the ice cubes begin to melt and dilute the mixture to form lemonade. Taste and stir in a squeeze or two more juice, if desired. Garnish the glasses with lemon slices or wedges and fresh lavender (if available) and serve immediately. Makes 2 servings, about 10 ounces each.